variable size ble transmissions

code/l452_code/Core/Inc/buff.hpp

@@ -3,66 +3,99 @@
 #include "fatfs.h"
 #include "usart.h"
 #include "usbd_cdc_if.h"
+#include "tim.h"
 #include "packet.hpp"
 
-extern uint8_t databank1[1024];
-extern uint8_t databank2[1024];
-extern uint16_t pos;
+void sd_send(uint8_t data[], uint32_t len);
+void usb_send(uint8_t data[], uint32_t len);
+void uart_send(uint8_t data[], uint32_t len);
 
-volatile extern bool usb_ready;
-volatile extern bool wb1mmc_ready;
-volatile extern bool sd_ready;
-extern FIL file;
+template<int N, void (*send_fn)(uint8_t data[], uint32_t len)>
+struct dbl_buff {
+  uint32_t last_write;
+  uint32_t pos;
+  alignas(4) uint8_t send_buffer1[N + 4];
+  alignas(4) uint8_t send_buffer2[N + 4];
+  uint8_t* const databank1;
+  uint8_t* const databank2;
+  
+  dbl_buff() : databank1(send_buffer1 + 4), databank2(send_buffer2 + 4) {};
+  
+  // Every time we get a reading add to the active databank if it fits,
+  // if not we switch banks and write out the now unactive databank
+  template<typename packet_type> void write(const packet_type& packet) {
+    if (pos + sizeof(packet_type) + 1 < N) {
+      databank1[pos] = typecode<packet_type>();
+      memcpy(databank1 + pos + 1, &packet, sizeof(packet_type));
+      pos += sizeof(packet_type) + 1;
+      return;
+    } else if (pos < N) {
+      send();
+      return this->write(packet);
+    } else if (pos + sizeof(packet_type) + 1 < 2 * N) {
+      databank2[pos - N] = typecode<packet_type>();
+      memcpy(databank2 + pos + 1 - N, &packet, sizeof(packet_type));
+      pos += sizeof(packet_type) + 1;
+      return;
+    } else {
+      send();
+      return this->write(packet);
+    }
+  };
 
-// Every time we get a reading add to the active databank if it fits,
-// if not we switch banks and write out the now unactive databank
+  void send() {
+    if (pos < N) {
+      ((uint32_t*)send_buffer1)[0] = pos;
+      send_fn(send_buffer1, pos + 4);
+      pos = N;
+    } else {
+      ((uint32_t*)send_buffer2)[0] = pos - N;
+      send_fn(send_buffer2, pos - N + 4);
+      pos = 0;
+    }
+    last_write = total_tim6();
+  }
+};
+
+extern struct dbl_buff<1024, usb_send> usb_buff;
+extern struct dbl_buff<1024, uart_send> ble_buff;
+extern struct dbl_buff<1024, sd_send> sd_buff;
+
+volatile extern bool send_imu_usb;
+volatile extern bool send_imu_ble;
+volatile extern bool send_adc_usb;
+volatile extern bool send_adc_ble;
+volatile extern bool send_ppg_usb;
+volatile extern bool send_ppg_ble;
+
+// Log all packets to SD card, only log big packets to
+// other things if required
 template<typename packet_type>
 void write(packet_type packet) {
-  if (pos + sizeof(packet) + 2 < sizeof(databank1)) {
-    *(uint16_t*)(&databank1[pos]) = typecode<packet_type>();
-    memcpy(databank1 + pos + 2, &packet, sizeof(packet));
-    pos += sizeof(packet) + 2;
-    return;
-  } else if (pos < sizeof(databank1)) {
-    if (usb_ready) {
-      CDC_Transmit_FS(databank1, sizeof(databank1));
-      usb_ready = false;
+  sd_buff.write(packet);
+  if (typecode<packet_type>() == typecode<packet_imu>()) {
+    if (send_imu_usb) {
+      usb_buff.write(packet);
     }
-    if (wb1mmc_ready) {
-      HAL_UART_Transmit_DMA(&huart1, databank1, sizeof(databank1));
-      wb1mmc_ready = false;
+    if (send_imu_ble) {
+      ble_buff.write(packet);
     }
-    if (sd_ready) {
-      UINT bytes_written;
-      FRESULT res = f_write(&file, databank1, sizeof(databank1), &bytes_written);
-      if (res != FR_OK || bytes_written != sizeof(databank1)) {}
+  } else if (typecode<packet_type>() == typecode<packet_adc>()) {
+    if (send_adc_usb) {
+      usb_buff.write(packet);
     }
-
-    memset(databank2, 0, sizeof(databank2));
-    pos = sizeof(databank1);
-    return write(packet);
-  } else if (pos + sizeof(packet) + 2 <
-	     sizeof(databank1) + sizeof(databank2)) {
-    *(uint16_t*)(&databank2[pos - sizeof(databank1)]) = typecode<packet_type>();
-    memcpy(databank2 + pos + 2 - sizeof(databank1), &packet, sizeof(packet));
-    pos += sizeof(packet) + 2;
-    return;
-  } else {
-    if (usb_ready) {
-      CDC_Transmit_FS(databank2, sizeof(databank2));
-      usb_ready = false;
+    if (send_adc_ble) {
+      ble_buff.write(packet);
     }
-    if (wb1mmc_ready) {
-      HAL_UART_Transmit_DMA(&huart1, databank2, sizeof(databank2));
-      wb1mmc_ready = false;
+  } else if (typecode<packet_type>() == typecode<packet_spo2>()) {
+    if (send_ppg_usb) {
+      usb_buff.write(packet);
     }
-    if (sd_ready) {
-      UINT bytes_written;
-      FRESULT res = f_write(&file, databank2, sizeof(databank2), &bytes_written);
-      if (res != FR_OK || bytes_written != sizeof(databank2)) {}
+    if (send_ppg_ble) {
+      ble_buff.write(packet);
     }
-    memset(databank1, 0, sizeof(databank1));
-    pos = 0;
-    return write(packet);
-  }  
-};
+  } else { // Send other types unconditionally
+    usb_buff.write(packet);
+    ble_buff.write(packet);
+  }
+}

code/l452_code/Core/Inc/tim.h

@@ -37,7 +37,10 @@ extern TIM_HandleTypeDef htim2;
 extern TIM_HandleTypeDef htim6;
 
 /* USER CODE BEGIN Private defines */
-
+extern volatile uint16_t tim6_reloads;
+__inline__ uint32_t total_tim6() {
+  return ((uint32_t)tim6_reloads) * (htim6.Init.Period + 1) + TIM6->CNT;
+}
 /* USER CODE END Private defines */
 
 void MX_TIM2_Init(void);

code/l452_code/Core/Src/ads131.cpp

@@ -10,9 +10,14 @@ void initialize_ads131(SPI_HandleTypeDef *hspi1) {
   uint8_t cmd[6] = {0x00, 0x11, 0x00};
   uint8_t rx_buff[18];
 
-  HAL_SPI_DeInit(hspi1);
-  hspi1->Init.CLKPolarity = SPI_POLARITY_LOW;
-  HAL_SPI_Init(hspi1);
+  while (__HAL_SPI_GET_FLAG(hspi1, SPI_FLAG_BSY));
+  __HAL_SPI_DISABLE(hspi1);
+  
+  MODIFY_REG(hspi1->Instance->CR1,
+             SPI_CR1_CPOL | SPI_CR1_CPHA,
+             SPI_POLARITY_LOW | SPI_PHASE_2EDGE);
+  
+  __HAL_SPI_ENABLE(hspi1);
   
   // reset
   HAL_GPIO_WritePin(GPIOA, ADC_CS_Pin, GPIO_PIN_RESET);
@@ -62,8 +67,6 @@ void initialize_ads131(SPI_HandleTypeDef *hspi1) {
 
 struct packet_adc p_adc;
 
-extern volatile uint16_t tim6_reloads;
-
 void read_ads131(SPI_HandleTypeDef *hspi1) {
   
   if (HAL_GPIO_ReadPin(GPIOA, ADC_DRDY_Pin) != GPIO_PIN_RESET) {
@@ -73,16 +76,22 @@ void read_ads131(SPI_HandleTypeDef *hspi1) {
   uint8_t cmd[6] = {0x0};
   uint8_t rx_buff[16] = {0x0};
 
-  HAL_SPI_DeInit(hspi1);
-  hspi1->Init.CLKPolarity = SPI_POLARITY_LOW;
-  HAL_SPI_Init(hspi1);
+  while (__HAL_SPI_GET_FLAG(hspi1, SPI_FLAG_BSY));
+  __HAL_SPI_DISABLE(hspi1);
+  
+  MODIFY_REG(hspi1->Instance->CR1,
+             SPI_CR1_CPOL | SPI_CR1_CPHA,
+             SPI_POLARITY_LOW | SPI_PHASE_2EDGE);
+  
+  __HAL_SPI_ENABLE(hspi1);
+
   
   HAL_GPIO_WritePin(GPIOA, ADC_CS_Pin, GPIO_PIN_RESET);
   HAL_SPI_TransmitReceive(hspi1, (uint8_t*) cmd, (uint8_t*) rx_buff, 18, HAL_MAX_DELAY);
   HAL_GPIO_WritePin(GPIOA, ADC_CS_Pin, GPIO_PIN_SET);
 
   if (p_adc.index == 0) {
-    p_adc.t = ((uint32_t)tim6_reloads) * (htim6.Init.Period + 1) + TIM6->CNT;
+    p_adc.t = total_tim6();
 
   }
   p_adc.ekg_readings_cnts[p_adc.index] = to_signed_24(&rx_buff[3]);

code/l452_code/Core/Src/buff.cpp

@@ -1,6 +1,32 @@
-//#include "buff.hpp"
+#include "buff.hpp"
 #include <cstdint>
 
-alignas(32) uint8_t databank1[1024];
-alignas(32) uint8_t databank2[1024];
-uint16_t pos = 0;
+void sd_send(uint8_t data[], uint32_t len) {
+  extern bool sd_ready;
+  extern FIL file;
+  if (sd_ready) {
+    UINT bytes_written;
+    FRESULT res = f_write(&file, data, len, &bytes_written);
+    //if (res != FR_OK || bytes_written != db_size)) {}
+  }
+}
+
+void usb_send(uint8_t data[], uint32_t len) {
+  extern bool usb_ready;
+  if (usb_ready) {
+    CDC_Transmit_FS(data, len);
+    usb_ready = false;
+  }
+}
+
+void uart_send(uint8_t data[], uint32_t len) {
+  extern bool wb1mmc_ready;
+  if (wb1mmc_ready) {
+    HAL_UART_Transmit_DMA(&huart1, data, len);
+    wb1mmc_ready = false;
+  }
+}
+
+struct dbl_buff<1024, usb_send> usb_buff;
+struct dbl_buff<1024, uart_send> ble_buff;
+struct dbl_buff<1024, sd_send> sd_buff;

code/l452_code/Core/Src/lsm6dsv.cpp

@@ -4,101 +4,88 @@
 #include "tim.h"
 #include "buff.hpp"
 
-extern volatile uint16_t tim6_reloads;
+extern SPI_HandleTypeDef hspi1;
+
+void send_receive_lsm6dsv(uint8_t *tx_buff, uint8_t *rx_buff, uint32_t len) {
+  HAL_GPIO_WritePin(GPIOC, IMU_CS_Pin, GPIO_PIN_RESET);
+  HAL_SPI_TransmitReceive(&hspi1, tx_buff, rx_buff, len, HAL_MAX_DELAY);
+  HAL_GPIO_WritePin(GPIOC, IMU_CS_Pin, GPIO_PIN_SET);
+}
 
 void initialize_lsm6dsv(SPI_HandleTypeDef *hspi1) {
 
-  uint8_t tx_buff[8] = {0};
-  uint8_t rx_buff[8] = {0};
-  
-  HAL_SPI_DeInit(hspi1);
-  hspi1->Init.CLKPolarity = SPI_POLARITY_HIGH;
-  HAL_SPI_Init(hspi1);
+  uint8_t tx_buff[2] = {0};
+  uint8_t rx_buff[2] = {0};
 
+  while (__HAL_SPI_GET_FLAG(hspi1, SPI_FLAG_BSY));
+  __HAL_SPI_DISABLE(hspi1);
+
+  MODIFY_REG(hspi1->Instance->CR1,
+             SPI_CR1_CPOL | SPI_CR1_CPHA,
+             SPI_POLARITY_HIGH | SPI_PHASE_2EDGE);
+
+  __HAL_SPI_ENABLE(hspi1);
+  
   tx_buff[0] = 0x01; // Reset
   tx_buff[1] = 0x04;
-  HAL_GPIO_WritePin(GPIOC, IMU_CS_Pin, GPIO_PIN_RESET);  
-  HAL_SPI_TransmitReceive(hspi1, tx_buff, rx_buff, 2, HAL_MAX_DELAY);
-  HAL_GPIO_WritePin(GPIOC, IMU_CS_Pin, GPIO_PIN_SET);
-  HAL_Delay(30);
-
-  tx_buff[0] = 0x03; // active high pushpull interrupt
-  tx_buff[1] = 0x01; // I2C and I3C disabled
-  HAL_GPIO_WritePin(GPIOC, IMU_CS_Pin, GPIO_PIN_RESET);  
-  HAL_SPI_TransmitReceive(hspi1, tx_buff, rx_buff, 2, HAL_MAX_DELAY);
-  HAL_GPIO_WritePin(GPIOC, IMU_CS_Pin, GPIO_PIN_SET);
-  HAL_Delay(30);
-  
-  tx_buff[0] = 0x09; // Set 60Hz data rate for fifo
-  tx_buff[1] = 0b01010101;
-  HAL_GPIO_WritePin(GPIOC, IMU_CS_Pin, GPIO_PIN_RESET);  
-  HAL_SPI_TransmitReceive(hspi1, tx_buff, rx_buff, 2, HAL_MAX_DELAY);
-  HAL_GPIO_WritePin(GPIOC, IMU_CS_Pin, GPIO_PIN_SET);
-  HAL_Delay(30);
-
-  tx_buff[0] = 0x0D; // Set drdy based on fifo
-  tx_buff[1] = 0b00111000;
-  HAL_GPIO_WritePin(GPIOC, IMU_CS_Pin, GPIO_PIN_RESET);  
-  HAL_SPI_TransmitReceive(hspi1, tx_buff, rx_buff, 2, HAL_MAX_DELAY);
-  HAL_GPIO_WritePin(GPIOC, IMU_CS_Pin, GPIO_PIN_SET);
-  HAL_Delay(30);
-
-  tx_buff[0] = 0x10; // Set 60Hz accelerometer high performance
-  tx_buff[1] = 0b00000101;
-  HAL_GPIO_WritePin(GPIOC, IMU_CS_Pin, GPIO_PIN_RESET);  
-  HAL_SPI_TransmitReceive(hspi1, tx_buff, rx_buff, 2, HAL_MAX_DELAY);
-  HAL_GPIO_WritePin(GPIOC, IMU_CS_Pin, GPIO_PIN_SET);
-  HAL_Delay(30);
-
-  tx_buff[0] = 0x11; // Set 60Hz gyro high performance
-  tx_buff[1] = 0b00000101;
-  HAL_GPIO_WritePin(GPIOC, IMU_CS_Pin, GPIO_PIN_RESET);  
-  HAL_SPI_TransmitReceive(hspi1, tx_buff, rx_buff, 2, HAL_MAX_DELAY);
-  HAL_GPIO_WritePin(GPIOC, IMU_CS_Pin, GPIO_PIN_SET);
-  HAL_Delay(30);
-
-  // todo: get watermark working
-  tx_buff[0] = 0x07;
-  tx_buff[1] = 21; // 21 samples
-  HAL_GPIO_WritePin(GPIOC, IMU_CS_Pin, GPIO_PIN_RESET);  
-  HAL_SPI_TransmitReceive(hspi1, tx_buff, rx_buff, 2, HAL_MAX_DELAY);
-  HAL_GPIO_WritePin(GPIOC, IMU_CS_Pin, GPIO_PIN_SET);
-  HAL_Delay(30);
+  send_receive_lsm6dsv(tx_buff, rx_buff, 2);
+  HAL_Delay(100);
 
   tx_buff[0] = 0x0A; // Set bypass mode for fifo
   tx_buff[1] = 0b00000000; // to clear fifo
-  HAL_GPIO_WritePin(GPIOC, IMU_CS_Pin, GPIO_PIN_RESET);  
-  HAL_SPI_TransmitReceive(hspi1, tx_buff, rx_buff, 2, HAL_MAX_DELAY);
-  HAL_GPIO_WritePin(GPIOC, IMU_CS_Pin, GPIO_PIN_SET);
-  HAL_Delay(30);
+  send_receive_lsm6dsv(tx_buff, rx_buff, 2);
+  
+  tx_buff[0] = 0x03; // active high pushpull interrupt
+  tx_buff[1] = 0x01; // I2C and I3C disabled
+  send_receive_lsm6dsv(tx_buff, rx_buff, 2);
+  
+  tx_buff[0] = 0x09; // Set 120Hz data rate for fifo
+  tx_buff[1] = 0b01100110;
+  send_receive_lsm6dsv(tx_buff, rx_buff, 2);
+
+  tx_buff[0] = 0x0D; // Set drdy based on fifo
+  tx_buff[1] = 0b00111000;
+  send_receive_lsm6dsv(tx_buff, rx_buff, 2);
+
+  tx_buff[0] = 0x10; // Set 120Hz accelerometer high performance
+  tx_buff[1] = 0b00000111;
+  send_receive_lsm6dsv(tx_buff, rx_buff, 2);
+
+  tx_buff[0] = 0x11; // Set 120Hz gyro high performance
+  tx_buff[1] = 0b00000110;
+  send_receive_lsm6dsv(tx_buff, rx_buff, 2);
+
+  tx_buff[0] = 0x07;
+  tx_buff[1] = 21; // 21 samples
+  send_receive_lsm6dsv(tx_buff, rx_buff, 2);
 
   tx_buff[0] = 0x0A; // Set continuous mode for fifo
   tx_buff[1] = 0b00000110;
-  HAL_GPIO_WritePin(GPIOC, IMU_CS_Pin, GPIO_PIN_RESET);  
-  HAL_SPI_TransmitReceive(hspi1, tx_buff, rx_buff, 2, HAL_MAX_DELAY);
-  HAL_GPIO_WritePin(GPIOC, IMU_CS_Pin, GPIO_PIN_SET);
-  HAL_Delay(30);
+  send_receive_lsm6dsv(tx_buff, rx_buff, 2);
 }
 
 struct packet_imu p_imu;
 
 void read_lsm6dsv(SPI_HandleTypeDef *hspi1) {
-  
+
   if (HAL_GPIO_ReadPin(GPIOC, IMU_DRDY_Pin) == GPIO_PIN_RESET) {
     return;
   }
-
-  HAL_SPI_DeInit(hspi1);
-  hspi1->Init.CLKPolarity = SPI_POLARITY_HIGH;
-  HAL_SPI_Init(hspi1);
+  
+  while (__HAL_SPI_GET_FLAG(hspi1, SPI_FLAG_BSY));
+  __HAL_SPI_DISABLE(hspi1);
+  
+  MODIFY_REG(hspi1->Instance->CR1,
+             SPI_CR1_CPOL | SPI_CR1_CPHA,
+             SPI_POLARITY_HIGH | SPI_PHASE_2EDGE);
+  
+  __HAL_SPI_ENABLE(hspi1);
 
   uint8_t tx_buff[141] = {0b10000000 + 0x78}; // FIFO addr
   
   // Watermark set for 21 samples, read 20
   tx_buff[0] = 0b10000000 + 0x78; // FIFO addr
-  p_imu.t = ((uint32_t)tim6_reloads) * (htim6.Init.Period + 1) + TIM6->CNT;
-  HAL_GPIO_WritePin(GPIOC, IMU_CS_Pin, GPIO_PIN_RESET);
-  HAL_SPI_TransmitReceive(hspi1, tx_buff, p_imu.data, 141, HAL_MAX_DELAY);
-  HAL_GPIO_WritePin(GPIOC, IMU_CS_Pin, GPIO_PIN_SET);
+  p_imu.t = total_tim6();
+  send_receive_lsm6dsv(tx_buff, p_imu.data, 141);
   write(p_imu);
 }

code/l452_code/Core/Src/main.cpp

@@ -61,6 +61,26 @@
 /* Private variables ---------------------------------------------------------*/
 
 /* USER CODE BEGIN PV */
+volatile bool send_imu_usb = false;
+volatile bool send_imu_ble = false;
+volatile bool send_adc_usb = false;
+volatile bool send_adc_ble = false;
+volatile bool send_ppg_usb = false;
+volatile bool send_ppg_ble = false;
+
+volatile uint16_t adc_value = 0;
+volatile bool adc_ready = false;
+
+volatile bool usb_ready = false;
+volatile bool wb1mmc_ready = false;
+volatile bool print_desc = false;
+volatile bool sd_ready = false;
+
+FATFS fs;
+FIL file;
+FRESULT res;
+
+uint8_t uart_rx_data[1];
 
 /* USER CODE END PV */
 
@@ -73,32 +93,17 @@ void PeriphCommonClock_Config(void);
 
 /* Private user code ---------------------------------------------------------*/
 /* USER CODE BEGIN 0 */
-
-volatile bool to_recordVbatt = false;
-volatile bool to_recordTime = false;
-
-volatile uint16_t adc_value = 0;
-volatile uint8_t adc_ready = 0;
-volatile uint16_t tim6_reloads = 0;
-volatile bool usb_ready = false;
-volatile bool wb1mmc_ready = false;
-volatile bool print_desc = false;
-volatile bool sd_ready = false;
-
-FATFS fs;
-FIL file;
-FRESULT res;
-
-uint8_t uart_rx_data[1];
-
 void HAL_ADC_ConvCpltCallback(ADC_HandleTypeDef* hadc) {
   if (hadc->Instance == ADC1) {
     adc_value = HAL_ADC_GetValue(hadc);
-    adc_ready = 1;
+    adc_ready = true;
   }
 }
 
-// 80MHz clock, 39999 prescaler and 19999 period for 0.1Hz
+volatile bool to_recordVbatt = false;
+volatile bool to_recordTime = false;
+// 80MHz clock, 39999 prescaler and 1999 period
+// 2000Hz TIM6 increment, and 1Hz reloads
 void HAL_TIM_PeriodElapsedCallback(TIM_HandleTypeDef *htim) {
   if (htim->Instance == TIM6) {
     tim6_reloads += 1;
@@ -107,34 +112,63 @@ void HAL_TIM_PeriodElapsedCallback(TIM_HandleTypeDef *htim) {
   }
 }
 
-volatile bool to_turn_on_sd = false;
-volatile bool to_turn_off_sd = false;
-void USB_CDC_RxHandler(uint8_t* Buf, uint32_t Len) {
-  if (memcmp(Buf, "R", Len) == 0) {
+volatile bool to_open_sd = false;
+volatile bool to_close_sd = false;
+void comm_handler(uint8_t ch) {
+  switch (ch) {
+    
+  case '1':
+    send_imu_usb = !send_imu_usb;
+    break;
+  case '2':
+    send_imu_ble = !send_imu_ble;
+    break;
+  case '3':
+    send_adc_usb = !send_adc_usb;
+    break;
+  case '4':
+    send_adc_ble = !send_adc_ble;
+    break;
+  case '5':
+    send_ppg_usb = !send_ppg_usb;
+    break;
+  case '6':
+    send_ppg_ble = !send_ppg_ble;
+    break;
+    
+  case 'r':
     usb_ready = true;
-  }
-  if (memcmp(Buf, "S", Len) == 0) {
-    to_turn_off_sd = true;
-  }
-  if (memcmp(Buf, "T", Len) == 0) {
-    to_turn_on_sd = true;
-  }
-  if (memcmp(Buf, "?", Len) == 0) {
+    break;
+  case 'R':
+    wb1mmc_ready = true;
+    break;
+  case 'S':
+    to_close_sd = true;
+    break;
+  case 'T':
+    to_open_sd = true;
+    break;
+  case '?':
     print_desc = true;
+    break;      
+  }
+}
+
+void USB_CDC_RxHandler(uint8_t* Buf, uint32_t Len) {  
+  if (Len == 1) {
+    comm_handler(Buf[0]);
   }
 }
 
 void HAL_UART_RxCpltCallback(UART_HandleTypeDef *huart) {
-  if (uart_rx_data[0] == 'R') {
-    wb1mmc_ready = true;
-  }
+  comm_handler(uart_rx_data[0]);
   HAL_UART_Receive_DMA(&huart1, uart_rx_data, sizeof(uart_rx_data));
 }
 
 void HAL_UART_TxCpltCallback(UART_HandleTypeDef *huart) {}
 
-void turn_on_sd(void) {
-  to_turn_on_sd = false;
+void open_sd(void) {
+  to_open_sd = false;
   if (BSP_SD_IsDetected() != SD_PRESENT) {
     return;
   }
@@ -159,13 +193,14 @@ void turn_on_sd(void) {
   }
 }
 
-void turn_off_sd(void) {
-  to_turn_off_sd = false;
+void close_sd(void) {
+  sd_ready = false;
+  to_close_sd = false;
   if (sd_ready) {
     f_sync(&file);
     f_close(&file);
     res = f_mount(NULL, "", 1);
-    sd_ready = false;
+
   }
 }
 /* USER CODE END 0 */
@@ -214,44 +249,41 @@ int main(void)
   MX_USB_DEVICE_Init();
   MX_FATFS_Init();
   /* USER CODE BEGIN 2 */
-
+  struct packet_vbatt p_vbatt;
+  struct packet_rtc p_rtc;
   /* USER CODE END 2 */
 
   /* Infinite loop */
   /* USER CODE BEGIN WHILE */
   HAL_TIM_Base_Start_IT(&htim6);
-  //HAL_UART_Receive_DMA(&huart1, uart_rx_data, sizeof(uart_rx_data));
-  // For some reason initializing the ads131 first breaks the lsm6dsv gyro readings
-  initialize_lsm6dsv(&hspi1);
-  //initialize_ads131(&hspi1);
-  //initialize_max30101(&hi2c1);
 
+  initialize_lsm6dsv(&hspi1);
+  initialize_ads131(&hspi1);
+  initialize_max30101(&hi2c1);
+  
+  HAL_UART_Receive_DMA(&huart1, uart_rx_data, sizeof(uart_rx_data));
+  usb_buff.last_write = total_tim6();
   while (1)
   {
     read_lsm6dsv(&hspi1);
-    //read_max30101(&hi2c1);
-    //read_ads131(&hspi1);
-    HAL_Delay(1);
-    continue;
-    // if (to_turn_on_sd) {
-    //   turn_on_sd();
-    // }
+    read_ads131(&hspi1);
+    read_max30101(&hi2c1);
 
-    // if (to_turn_off_sd) {
-    //   turn_off_sd();
-    // }
-    // continue;
-    /* USER CODE END WHILE */
+    if (to_open_sd) {
+      open_sd();
+    }
+
+    if (to_close_sd) {
+      close_sd();
+    }
     
-    /* USER CODE BEGIN 3 */
     if (print_desc) {
       data_description(true, false);
       print_desc = false;
     }
 
     if (to_recordTime) {
-      struct packet_rtc p_rtc;
-      p_rtc.t = ((uint32_t)tim6_reloads) * (htim6.Init.Period + 1) + TIM6->CNT;
+      p_rtc.t = total_tim6();
       HAL_RTC_GetTime(&hrtc, &p_rtc.sTime, RTC_FORMAT_BCD);
       HAL_RTC_GetDate(&hrtc, &p_rtc.sDate, RTC_FORMAT_BCD);
       write(p_rtc);
@@ -259,25 +291,27 @@ int main(void)
     }
 
     if (to_recordVbatt) {
-      adc_ready = 0;
+      adc_ready = false;
       HAL_ADC_Start_IT(&hadc1);      
       to_recordVbatt = false;
     }
     
     if (adc_ready) {
-      adc_ready = 0;
-      struct packet_vbatt p_vbatt;
-      p_vbatt.t = ((uint32_t)tim6_reloads) * (htim6.Init.Period + 1) + TIM6->CNT;
-      p_vbatt.vbatt_cnts = HAL_ADC_GetValue(&hadc1);
+      adc_ready = false;
+      p_vbatt.t = total_tim6();
+      p_vbatt.vbatt_cnts = adc_value;
       write(p_vbatt);
     }
 
-    read_ads131(&hspi1);
-    read_lsm6dsv(&hspi1);
-    // HAL_GPIO_WritePin(GPIOB, LED1_Pin|LED2_Pin|LED3_Pin, GPIO_PIN_SET);
-    // HAL_Delay(100);
-    // HAL_GPIO_WritePin(GPIOB, LED1_Pin|LED2_Pin|LED3_Pin, GPIO_PIN_RESET);
-    // HAL_Delay(100);
+    if (usb_ready and total_tim6() - usb_buff.last_write > 4000) {
+      extern dbl_buff<1024, usb_send> usb_buff;
+      usb_buff.send();
+    }
+
+    if (wb1mmc_ready and total_tim6() - ble_buff.last_write > 4000) {
+      extern dbl_buff<1024, uart_send> ble_buff;
+      ble_buff.send();
+    }
   }
   /* USER CODE END 3 */
 }

code/l452_code/Core/Src/max30101.cpp

@@ -8,7 +8,6 @@
 #include "packet.hpp"
 #include "buff.hpp"
 
-extern uint16_t tim6_reloads;
 struct packet_spo2 p_spo2;
 uint8_t data[4];
 
@@ -61,7 +60,7 @@ void initialize_max30101(I2C_HandleTypeDef *hi2c1) {
 
 void read_max30101(I2C_HandleTypeDef *hi2c1) {
   if (print_ready) {
-    p_spo2.t = ((uint32_t)tim6_reloads) * (htim6.Init.Period + 1) + TIM6->CNT;
+    p_spo2.t = total_tim6();
     write(p_spo2);
     print_ready = false;
   }

code/l452_code/Core/Src/spi.c

@@ -44,7 +44,7 @@ void MX_SPI1_Init(void)
   hspi1.Init.CLKPolarity = SPI_POLARITY_LOW;
   hspi1.Init.CLKPhase = SPI_PHASE_2EDGE;
   hspi1.Init.NSS = SPI_NSS_SOFT;
-  hspi1.Init.BaudRatePrescaler = SPI_BAUDRATEPRESCALER_64;
+  hspi1.Init.BaudRatePrescaler = SPI_BAUDRATEPRESCALER_16;
   hspi1.Init.FirstBit = SPI_FIRSTBIT_MSB;
   hspi1.Init.TIMode = SPI_TIMODE_DISABLE;
   hspi1.Init.CRCCalculation = SPI_CRCCALCULATION_DISABLE;

code/l452_code/Core/Src/tim.c

@@ -21,7 +21,7 @@
 #include "tim.h"
 
 /* USER CODE BEGIN 0 */
-
+volatile uint16_t tim6_reloads = 0;
 /* USER CODE END 0 */
 
 TIM_HandleTypeDef htim2;

code/l452_code/Makefile

@@ -1,5 +1,5 @@
 ##########################################################################################################################
-# File automatically-generated by tool: [projectgenerator] version: [4.9.0-B19] date: [Thu May 07 13:29:52 CDT 2026] 
+# File automatically-generated by tool: [projectgenerator] version: [4.9.0-B19] date: [Fri May 08 12:05:31 CDT 2026] 
 ##########################################################################################################################
 
 # ------------------------------------------------

code/l452_code/l452_code.ioc

@@ -362,9 +362,9 @@ SH.GPXTI5.0=GPIO_EXTI5
 SH.GPXTI5.ConfNb=1
 SH.S_TIM2_ETR.0=TIM2_ETR,ClockSourceETR_Mode2
 SH.S_TIM2_ETR.ConfNb=1
-SPI1.BaudRatePrescaler=SPI_BAUDRATEPRESCALER_64
+SPI1.BaudRatePrescaler=SPI_BAUDRATEPRESCALER_16
 SPI1.CLKPhase=SPI_PHASE_2EDGE
-SPI1.CalculateBaudRate=1.25 MBits/s
+SPI1.CalculateBaudRate=5.0 MBits/s
 SPI1.DataSize=SPI_DATASIZE_8BIT
 SPI1.Direction=SPI_DIRECTION_2LINES
 SPI1.IPParameters=VirtualType,Mode,Direction,CalculateBaudRate,DataSize,BaudRatePrescaler,CLKPhase

code/l452_code/packet_parser_serial.py

@@ -4,47 +4,31 @@ from scipy import signal
 import time
 import serial
 
-ser = serial.Serial(port = '/dev/ttyACM1', timeout = 10.0)
-ser.reset_input_buffer()
-start = time.time()
-for i in range(50):    
-    ser.write(b'R')
-    cons = ser.read(1024)
-print(1024 * 50 / (time.time() - start))
-quit()
-
-format_string=(
-    b"""packet_rtc 1 28 uint32_t t 0 4 RTC_TimeTypeDef sTime 4 20 RTC_DateTypeDef sDate 24 4
-packet_vbatt 2 8 uint32_t t 0 4 uint16_t vbatt_cnts 4 2
-packet_imu 9 12 uint32_t t 0 4 uint16_t readings_cnts[4] 4 2
-packet_ekg 3 208 uint32_t t 0 4 uint8_t index 4 1 int32_t readings_cnts[50] 8 4
-packet_strain 4 28 uint32_t t 0 4 uint8_t index 4 1 int32_t readings_cnts[5] 8 4
-packet_outsideT 5 28 uint32_t t 0 4 uint8_t index 4 1 int32_t readings_cnts[5] 8 4
-packet_insideT 6 28 uint32_t t 0 4 uint8_t index 4 1 int32_t readings_cnts[5] 8 4
-packet_button 7 8 uint32_t t 0 4 uint8_t button_vec 4 1
-packet_spo2 8 304 uint32_t t 0 4 uint32_t green_cnts[25] 4 4 uint32_t red_cnts[25] 104 4 uint32_t ir_cnts[25] 204 4""")
-
-types = []
-
 def arr_sizes(s):
     if s[-1:] != b']' or b'[' not in s:
         return 1
     v = int(s[s.rindex(b'[') + 1:-1])
     return v
 
-for line in format_string.split(b"\n"):
-    line = line.strip(b'\n').strip(b'\r')
-    if line != b'':
-        L = line.split(b" ")
-        types.append({'type_name' : L[0],
-                      'type_code' : int(L[1]),
-                      'size' : int(L[2]),
-                      'elements' : []
-                      })
-        i = 3
-        while i < len(L):
-            types[-1]['elements'].append({'type_name' : L[i], 'name' : L[i + 1], 'offset' : int(L[i + 2]), 'n_elements' : arr_sizes(L[i + 1]), 'size' : int(L[i + 3]) * arr_sizes(L[i + 1]), 'readings' : []})
-            i += 4
+def get_type_list(ser):
+    ser.write(b'?')
+
+    types = []
+
+    for i in range(13):
+        line = ser.readline().strip(b'\n').strip(b'\r')
+        if line != b'':
+            L = line.split(b" ")
+            types.append({'type_name' : L[0],
+                          'type_code' : int(L[1]),
+                          'size' : int(L[2]),
+                          'elements' : []
+                          })
+            i = 3
+            while i < len(L):
+                types[-1]['elements'].append({'type_name' : L[i], 'name' : L[i + 1], 'offset' : int(L[i + 2]), 'n_elements' : arr_sizes(L[i + 1]), 'size' : int(L[i + 3]) * arr_sizes(L[i + 1])})
+                i += 4
+    return types
 
 def my_filter(arr):
     inds = np.where(np.abs(np.diff(arr)) > 0.005)[0]
@@ -57,81 +41,126 @@ def my_filter(arr):
             next_ind += 1
         arr[ind] = 0.5 * arr[prev_ind] + 0.5 * arr[next_ind]
     return arr
-    
-def update_with_data():
 
-    nyquist = 0.5 * 250
-    b, a = signal.butter(2, 100 / nyquist, btype='low', analog = False)
-    
-    fig, axs = plt.subplots(2)
 
-    adcs = []
-    accs = []
-    gyros = []
+
+accs = []
+gyros = []
+def process_imu(d, t):
+    global accs
+    global gyros
+    for e in t['elements']:
+        block = d[e['offset']:e['offset'] + e['size']]
+        element_size = int(len(block) / e['n_elements'])
+        if e['name'] == b'data[141]':
+            for i in range(20):
+                reading = block[1 + 7 * i : 8 + 7 * i]
+                #print(reading)
+                imu_reading_type = reading[0] >> 3
+                imu_reading_tag_cnt = (reading[0] >> 1) & 3
+                data = np.array([int.from_bytes(reading[2 * i + 1 : 2 * i + 3], byteorder = 'little', signed = True) for i in range(3)])
+                if imu_reading_type == 1:
+                    gyros.append(250 / (1<<16) * data)
+                elif imu_reading_type == 2:
+                    accs.append(4 / (1<<16) * data)
+                else:
+                    assert False
+            if len(gyros) > 400:
+                gyros = gyros[-400:]
+            if len(accs) > 400:
+                accs = accs[-400:]
+            fig, axs = plt.subplots(2)
+            g = np.array(gyros)
+            a = np.array(accs)
+            axs[0].set_ylabel("dps")
+            axs[0].plot(g[:,0])
+            axs[0].plot(g[:,1])
+            axs[0].plot(g[:,2])
+            axs[1].set_ylabel("g")
+            axs[1].plot(a[:,0])
+            axs[1].plot(a[:,1])
+            axs[1].plot(a[:,2])
+            plt.savefig("acc_gyro.png")
+            plt.close()
+                    
+                
+def update_with_data(ser, types):
     
-    ser = serial.Serial(port = '/dev/ttyACM1', timeout = 10.0)
+    ser.timeout = 3
     ser.reset_input_buffer()
     start = time.time()
     while(True):
-        ser.write(b'R')
-        cons = ser.read(1024)
-        if True:
-            index = 0
-            while (index < 1024):
-                #print(index, len(cons))
-                packet_type = (cons[index + 1]<<8) + cons[index]
-                print(index, packet_type)
-                ind = [i for i,t in enumerate(types) if t['type_code'] == packet_type]
-                if len(ind) != 1:
-                    break
-                t = types[ind[0]]
-                d = cons[index + 2 : index + 2 + t['size']]
-                for e in t['elements']:
-                    block = d[e['offset']:e['offset'] + e['size']]
-                    element_size = int(len(block) / e['n_elements'])
-                    if t['type_name'] == b'packet_ekg' and e['name'] == b'readings_cnts[50]':
-                        chunked = [(2.4 / (1<<24)) * int.from_bytes(block[i:i + element_size], byteorder='little', signed = True) for i in range(0, len(block), element_size)]
-                        adcs += chunked
-                        if len(adcs) > 500:
-                            dat = np.array(adcs[-2048:])
-                            if len(adcs) > 2048:
-                                adcs = adcs[-2048:]
-                            #filtered_dat = my_filter(dat)
-                            filtered_dat = dat
-                            filtered_dat = signal.filtfilt(b, a, filtered_dat)
-                            dd = np.sort(dat)
-                            center = 0.5 * (dd[-100] + dd[100])
-                            range_ = dd[-100] - dd[100]
-                            if len(dat) == 2048:
-                                print("Freq:", 2048 / (time.time() - start))
-                                axs[0].cla()
-                                axs[1].cla()
-                                axs[0].set_title("ADC {:3.3f}mV".format(1000 * (range_)))
-                                               
-                                #axs[0].plot(dat, 'r.', linestyle = '--')
-                                axs[0].plot(filtered_dat, 'k.', linestyle = '--')
-                                #axs[0].set_ylim(center - range_, center + range_)
-                                _fft = np.log(np.abs(np.fft.fft(filtered_dat)[1:]))
-                                axs[1].plot(250 * np.fft.fftfreq(dat.shape[-1])[1:], _fft, 'k.')
-                                axs[1].axvline(x = 60)
-                                plt.savefig("image.png")
+        ser.write(b'r')
+        size = int.from_bytes(ser.read(4), byteorder = 'little', signed = False)
+        cons = ser.read(size)
+        index = 0
+        while (index < size):
+            packet_type = cons[index]
+            t = [t for t in types if t['type_code'] == packet_type][0]
+            print(index, packet_type, t['type_name'])
+            d = cons[index + 1 : index + 1 + t['size']]
+            if t['type_name'] == b'packet_imu':
+                pass
+                #process_imu(d, t)
+            if t['type_name'] == b'packet_msg':
+                print(d)
+            index += 1 + t['size']
+            
+            # if t['type_name'] == b'packet_ekg' and e['name'] == b'readings_cnts[50]':
+            #     chunked = [(2.4 / (1<<24)) * int.from_bytes(block[i:i + element_size], byteorder='little', signed = True) for i in range(0, len(block), element_size)]
+            #     adcs += chunked
+            #         if len(adcs) > 500:
+            #             dat = np.array(adcs[-2048:])
+            #             if len(adcs) > 2048:
+            #                 adcs = adcs[-2048:]
+            #             #filtered_dat = my_filter(dat)
+            #             filtered_dat = dat
+            #             filtered_dat = signal.filtfilt(b, a, filtered_dat)
+            #             dd = np.sort(dat)
+            #             center = 0.5 * (dd[-100] + dd[100])
+            #             range_ = dd[-100] - dd[100]
+            #             if len(dat) == 2048:
+            #                 print("Freq:", 2048 / (time.time() - start))
+            #                 axs[0].cla()
+            #                 axs[1].cla()
+            #                 axs[0].set_title("ADC {:3.3f}mV".format(1000 * (range_)))
+            
+            #                 #axs[0].plot(dat, 'r.', linestyle = '--')
+            #                 axs[0].plot(filtered_dat, 'k.', linestyle = '--')
+            #                 #axs[0].set_ylim(center - range_, center + range_)
+            #                 _fft = np.log(np.abs(np.fft.fft(filtered_dat)[1:]))
+            #                 axs[1].plot(250 * np.fft.fftfreq(dat.shape[-1])[1:], _fft, 'k.')
+            #                 axs[1].axvline(x = 60)
+            #                 plt.savefig("image.png")
+            
+            # if t['type_name'] == b'packet_imu' and e['name'] == b'readings_cnts[4]':
+            #     imu_reading_type = block[0] >> 3
+            #     imu_reading_tag_cnt = (block[0] >> 1) & 3
+            #     reading_xyz = [int.from_bytes(block[2:4], byteorder = 'big', signed = True),
+            #                    int.from_bytes(block[4:6], byteorder = 'big', signed = True),
+            #                    int.from_bytes(block[6:8], byteorder = 'big', signed = True)]
+            #     if imu_reading_type == 1:
+            #         #print("{:02x} {:d}".format(imu_reading_type, imu_reading_tag_cnt))
+            #         gyros.append([250 * e / (1<<16) for e in reading_xyz])
+            #     elif imu_reading_type == 2:
+            #         accs.append([4 * e / (1<<16) for e in reading_xyz])
+            #     else:
+            #         print("ERR")
 
-                    if t['type_name'] == b'packet_imu' and e['name'] == b'readings_cnts[4]':
-                        imu_reading_type = block[0] >> 3
-                        imu_reading_tag_cnt = (block[0] >> 1) & 3
-                        reading_xyz = [int.from_bytes(block[2:4], byteorder = 'big', signed = True),
-                                       int.from_bytes(block[4:6], byteorder = 'big', signed = True),
-                                       int.from_bytes(block[6:8], byteorder = 'big', signed = True)]
-                        if imu_reading_type == 1:
-                            #print("{:02x} {:d}".format(imu_reading_type, imu_reading_tag_cnt))
-                            gyros.append([250 * e / (1<<16) for e in reading_xyz])
-                        elif imu_reading_type == 2:
-                            accs.append([4 * e / (1<<16) for e in reading_xyz])
-                        else:
-                            print("ERR")
-                index += 2 + t['size']
 
 def main():
-    update_with_data()
+
+    ser = serial.Serial(port = '/dev/ttyACM1', timeout = 0.5)
+    ser.flush()
+    ser.reset_input_buffer()
+    
+    types = get_type_list(ser)
+
+    # ser.write(b'1')
+    # ser.write(b'3')
+    # ser.write(b'5')
+    ser.flush()
+    
+    update_with_data(ser, types)
 
 main()

code/wb1mmc_code/Core/Src/main.c

@@ -65,19 +65,18 @@ void PeriphCommonClock_Config(void);
 /* Private user code ---------------------------------------------------------*/
 /* USER CODE BEGIN 0 */
 
-uint8_t uart_rx_data[1024];
+uint8_t uart_rx_data[1028];
 uint8_t uart_tx_data[1] = {'R'};
 bool ready_for_data = false;
 
-uint8_t notify_buffer[128];
+volatile uint32_t xfer_len;
 
 volatile bool do_notify = false;
 void SendNotifyTask(void) {
   if (!do_notify) {
     return;
   }
-  for (int i = 0; i < 8; ++i) {
-  //memcpy(notify_buffer, uart_rx_data, sizeof(notify_buffer));
+  for (int i = 0; 128 * i < xfer_len; ++i) {
     Custom_STM_App_Update_Char(
                                CUSTOM_STM_ARRREAD,
                                uart_rx_data + i * 128
@@ -85,19 +84,23 @@ void SendNotifyTask(void) {
   }
 }
 
-void HAL_UART_RxCpltCallback(UART_HandleTypeDef *huart) {
-  HAL_GPIO_TogglePin(GPIOA, LED4_Pin);
-  //memcpy(notify_buffer, uart_rx_data, sizeof(notify_buffer));// do second half later
+void HAL_UARTEx_RxEventCallback(UART_HandleTypeDef *huart, uint16_t Size) {
+  HAL_GPIO_TogglePin(GPIOA, LED5_Pin);
   UTIL_SEQ_SetTask(1<<CFG_TASK_SEND_NOTIFY, UTIL_SEQ_RFU);
   // Process data here or something
-  HAL_UART_Receive_DMA(&huart1, uart_rx_data, sizeof(uart_rx_data));
-  HAL_UART_Transmit_DMA(&huart1, uart_tx_data, sizeof(uart_tx_data));
+  if (huart->gState == HAL_UART_STATE_READY) {
+    HAL_UART_Transmit_DMA(&huart1, uart_tx_data, sizeof(uart_tx_data));
+  }
+  xfer_len = Size;
+  HAL_UARTEx_ReceiveToIdle_DMA(&huart1, uart_rx_data, sizeof(uart_rx_data));
 }
 
 void HAL_UART_TXCpltCallback(UART_HandleTypeDef *huart) {}
 
+// tim2 is 1kHz, callback is 1Hz
 void HAL_TIM_PeriodElapsedCallback(TIM_HandleTypeDef *htim) {
   if (htim->Instance == TIM2) {
+    HAL_UART_Transmit_DMA(&huart1, uart_tx_data, sizeof(uart_tx_data));
   }
 }
 /* USER CODE END 0 */
@@ -155,8 +158,13 @@ int main(void)
   /* USER CODE BEGIN WHILE */
   HAL_TIM_Base_Start_IT(&htim2);
   UTIL_SEQ_RegTask(1<<CFG_TASK_SEND_NOTIFY, UTIL_SEQ_RFU, SendNotifyTask);
+  HAL_GPIO_WritePin(GPIOA, LED4_Pin, GPIO_PIN_SET);
+  HAL_GPIO_WritePin(GPIOA, LED5_Pin, GPIO_PIN_RESET);
   HAL_Delay(1000); // Give the l452 time to start up
-  HAL_UART_Receive_DMA(&huart1, uart_rx_data, sizeof(uart_rx_data));
+  HAL_GPIO_WritePin(GPIOA, LED4_Pin, GPIO_PIN_RESET);
+  HAL_GPIO_WritePin(GPIOA, LED5_Pin, GPIO_PIN_SET);
+  __HAL_DMA_DISABLE_IT(huart1.hdmarx, DMA_IT_HT);  
+  HAL_UARTEx_ReceiveToIdle_DMA(&huart1, uart_rx_data, sizeof(uart_rx_data));
   HAL_UART_Transmit_DMA(&huart1, uart_tx_data, sizeof(uart_tx_data));
   while (1)
   {

code/wb1mmc_code/STM32_WPAN/App/custom_app.c

@@ -30,6 +30,7 @@
 /* Private includes ----------------------------------------------------------*/
 /* USER CODE BEGIN Includes */
 #include <stdbool.h>
+#include "gpio.h"
 /* USER CODE END Includes */
 
 /* Private typedef -----------------------------------------------------------*/

code/wb1mmc_code/STM32_WPAN/App/custom_stm.c

@@ -23,7 +23,7 @@
 #include "custom_stm.h"
 
 /* USER CODE BEGIN Includes */
-
+#include "usart.h"
 /* USER CODE END Includes */
 
 /* Private typedef -----------------------------------------------------------*/
@@ -39,7 +39,7 @@ typedef struct{
 
 extern uint16_t Connection_Handle;
 /* USER CODE BEGIN PTD */
-
+uint8_t uart_to_l452_data[1];
 /* USER CODE END PTD */
 
 /* Private defines -----------------------------------------------------------*/
@@ -192,7 +192,10 @@ static SVCCTL_EvtAckStatus_t Custom_STM_Event_Handler(void *Event)
           {
             return_value = SVCCTL_EvtAckFlowEnable;
             /* USER CODE BEGIN CUSTOM_STM_Service_1_Char_1_ACI_GATT_ATTRIBUTE_MODIFIED_VSEVT_CODE */
-
+            if (attribute_modified->Attr_Data[0] != 'R') {
+              uart_to_l452_data[0] = attribute_modified->Attr_Data[0];
+              HAL_UART_Transmit_DMA(&huart1, uart_to_l452_data, 1);
+            }
             /* USER CODE END CUSTOM_STM_Service_1_Char_1_ACI_GATT_ATTRIBUTE_MODIFIED_VSEVT_CODE */
           } /* if (attribute_modified->Attr_Handle == (CustomContext.CustomArrwriteHdle + CHARACTERISTIC_VALUE_ATTRIBUTE_OFFSET))*/
           /* USER CODE BEGIN EVT_BLUE_GATT_ATTRIBUTE_MODIFIED_END */